<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      let arr = [6, 3, 30, 20, 33, 28, 16, 19];
      for (let i = 0; i < arr.length - 1; i++) {
        for (let j = 0; j <= arr.length - 1 - i; j++) {
          if (arr[j] > arr[j + 1]) {
            let tmp = arr[j];
            arr[j] = arr[j + 1];
            arr[j + 1] = tmp;
          }
        }
      }
      console.log(arr);
    </script>
  </body>
</html>
